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Finding the Fourth Proportional to 13,571.10, 18,728.49 and 7,602.64

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Solution

The fourth proportional to 13,571.10, 18,728.49 and 7,602.64 is: 10,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.10 : 18,728.49 = 7,602.64 : x
  2. Step 2: Convert to fraction form
    13,571.10/18,728.49 = 7,602.64/x
  3. Step 3: Cross multiply
    13,571.10x = 18,728.49 × 7,602.64
  4. Step 4: Simplify right side
    13,571.10x = 142,386,032.87
  5. Step 5: Solve for x
    x = 142,386,032.87/13,571.10
  6. Step 6: Final answer
    x = 10,491.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.